Featured Image troubles

Hi Tom,
Is there a way NOT to show my featured image at the top of my blog post, but just in the excerpt on the blog page?

E.g., this post: https://publicitygeek.com/pr-whats-difference-public-relations-press-release/

the positioning of the image is weird and screws up the post.

And here: https://publicitygeek.com/

it would be great to be able to make the image go inline with the text and either left or right aligned... is that possible?

Thanks,
Dave